Excelsior-cutting machine.



No.s4a,4.j PATENTEDAPR;2,190'1,

w. D. CRAIG. EXCELSIOR CUTTING -MAGHINBl APPLIUATION FILED HOV. 5,1906.

2 SHEETS-SHEET 2.

W i V W/liamllcrazy me :domus Druids-co4, WASHINGTON. n. c.

WILLIAM D. CRAIG, OF KANSAS CITY, MISSOURI.

EXCELSIOR-CUTTING IVIACHIN E.

Ivo. 848,884.

Specication of Letters Patent.

Patented April 2, 1907.

Application filed November 5, 1906. Serial No. 341.999.

T0 @ZZ whom t may concern:

Be it known that I, WILLIAM D. CRAIG, a citizen of the United States,residing at Kansas City, in the county of Jackson and State of Missouri,have invented certain new and useful Improvements in Excelsior-CuttingMachines, of which the following is a specification.

My invention relates to improvements in excelsior-cutting machines andmy cbj ect is to produce a machine whereby shavings for excelsiorpacking may be produced expeditiously and at small cost.

The machine is automatic in operation, and hence requires the attentionof but one attendant in placing the blocks from which the shavings arecut in position on the machine.

The invention consists of the novel construction, combination, andarrangement of parts hereinafter described, pointed out in the claims,and illustrated in the accompanying drawings, in which- Figure 1represents a front elevation of the machine, showing a block in positionthereon in dotted lines. Fig. 2 is a side elevation of the same.

In carrying out the invention I employ a main frame 1, provided withbearings 2 for the reception of a drive-shaft 3, arranged to be drivenby a pulley 4, fixed upon the rear end thereof.

5 designates a rotary cutter fixed to the opposite end of shaft 3 andconsisting of a disk 6 and blades 7, having their cutting edgesprojecting through slots 8, radially arranged in the disk. 30 30 arestandards rising from the main frame 1, as shown.

9 designates a self-adjusting swinging frame for supporting the blockand automatically feeding the same to the rotary cutter. Frame 9consists of a pair of arms 10, secured together by a brace 11 andpivotally supported at their upper ends upon a countershaft 12 in theupper ends of the standards 30 so that their lower ends will be free toswing forwardly and backwardly. The lower end of frame 9 is providedwith a chuck, comprising a rotary member 13 and an adjustable member 14,which latter is provided with a handle 15, said members being arrangedin horizontal alinement in the lower ends of arms- 9 and at right anglesto the axis of the shaft 3, as shown in Fig. 1.

Members 13 14 are provided with centrally-disposed points 16 17,respectively, for

engaging the ends of the block, and member 13 is further provided withsharpened lugs '18 for engaging one end of said block, so that thelatter will rotate with member 13, and thus present a newcutting-surface to each of the blades 7. The outer end of member 13 isprovided with a fixed pulley 19, driven by a smaller pulley 20, throughthe instrumentality of an endless belt 21. Pulley 20 is fixed upon oneend of shaft 12,'which latter is driven by a large pulley 22 fixedthereon. Pulley 22 is driven from shaft 3 by a small pulley 23 and anendless belt 24.

The block is held in contact with the rotary cutter by the weight offrame 9 itself, which is arranged at an angle, as shown in Fig. 2, and aweight 25, suspended from said frame by a cable 26, running over aguidewheel 27, carried in the upper portion of frame 1.

By employing the gravity-feed just described the block will be drawninto contact with the cutter as rapidly as the latter removes theshavings therefrom, and hence is superior to the worin-feeds usuallyemployed in machines of this character, which have the objections ofeither feeding too slow or too fast for the cutter.

Before the block has been reduced sufficiently in diameter to permitchuck 13 to come into contact with the cutter the backward movement offrame 9 is stopped by stops consisting of set-screws 28, arranged in theoutturned ends of arms 29, projecting forwardly from the standards 30,arranged upon the main frame 1 for the support of shaft 12 and the partscarried thereby. By thus providing the adjustable stops or setscrews 28it is obvious the backward movement of frame 9 may be checked at theexact point desired.

By rotating the block during the cutting operation it will soon bereduced to cylindrical form, or nearly so, so that the shavings cuttherefrom will be of uniform size.

Having thus described my invention, what I claim is- 1. In a machine ofthe character described, the combination with the main frame and fixedstandards rising therefrom, a main shaft journaled in the frame andhaving a disk cutter and a pulley, a counter-shaft j ournaled in saidstandards at right angles to the main shaft, a pulley on thecounter-shaft,

and belting connecting said pulleys; of aswinging frame comprising armspivoted at their upper ends on the counter-shaft, chuck members carriedby their lower ends, a belt and pulleys connecting one of said memberswith the coimter-shaft, a brace rigidly connecting said arms, a pulleyon the main frame, and a cable leading Jfrom said brace over the pulleyto a weight.

2. In a machine of the character described, the combination with themain frame and iiXed standards rising therefrom, a main shaft journaledin the frame and having a disk cutter and a pulley, a counter-shaftjournaled in said standards at right angles to the main shaft, a pulleyon the counter-shaft, and belting connecting said pulleys 5 of aswinging Jraine comprising arms pivoted at their upper ends on thecounter-shaft, chuck members carried by their lower ends, a belt andpulleys connecting one of' said members with the counter-shaft, a bracerigidly connecting said arms, arms projecting rigidly from saidstandards above the disk cutter, and set-screws in these arms adapted tobe struck by the side arms of said swinging frame, substantially asdescribed.

In testimony whereof l affix my signature in the presence of twowitnesses.

VILLIAM D. CRAIG.

lVitnesses F. G. FrsoHER, M Cox.

